plain

apparent appreciable artless audible austere bald bare-bones blatant blank bold bolder broad broadest broader candid certain clean clear cleanest clear-cut clearer clearest common commonest comprehensible conspicuous conventional crashing crystal clear definite definitive demonstrative direct discernible distinct dowdy down and dirty downright dry dull dull duller duller easiest easier easy elementary everyday evident expanse expanses explicit express featureless familiar flat folksy formulaic forthright frank frumpy frumpish genuine grassland gross hard harder homely homely household honest homespun ignoble inarguable inconspicuous incontestable ingenuous insipid intelligible knowable known legible levels level level literal low lucid manifest matter-of-fact meadows meadow meek mere mesa modest more apparent more evident more familiar more legible more known more modest more natural more natural more obvious more open more open more selfevident more selfevident more selfexplanatory more selfexplanatory more readable more self evident more self evident more self-explanatory more self-explanatory more self-evident more self-evident more understandable more understandable more undisputable more self explanatory more self explanatory more visible most apparent most certain most known most noticeable most obvious most self evident most self evident most self-evident most self-evident most self explanatory most self explanatory most selfexplanatory most selfexplanatory most selfevident most selfevident most restrained most self-explanatory most self-explanatory most undisputable mousy naive naked natural natural noticeable obvious open-and-shut open and shut/open-and-shut openhearted open open ordinary outspoken overt palpable patent pellucid perspicuous plainspoken plane plateau plateaus point-blank poor prairies prairie prima facie public pure purest quieter quietest quiet readable restrained round routine rudimental rustic rustic savannahs savannas savannas savanna savanna/savannah seeable see-through self-evident/self-explanatory self-evident self-explanatory sensory sincere simple simple simple simpler simpler simpler sincerest slender slenderer slenderest smoothest smoother smooth sober spartan stark steppe straight straight straightforward straightforward straight-out straight-from-the-shoulder straight-shooting table tangible tasteless transparent transparent ugly unaffected unambiguous unappealing unassuming unassailable unattractive unblended unbounded unconcealed unconspicuous understandable understandable undistinguished undiluted undiluted undisputable unembellished unembellished unequivocal unexceptional unexciting unfinished unmistakable unnoticeable unostentatious unpretentious unrelieved unremarkable unsophisticated unsubtle unvarying used to usual vanilla valleys valley very viewable visible well-defined